On MIPS as usual KSEG0 segment used for cached memory access, and Linux kernel linked to KSEG0.
As just now we don't have cache memory support on MIPS, we can change the KSEG0 mode (make it uncached) and use it without any danger. Signed-off-by: Antony Pavlov <[email protected]> --- arch/mips/mach-malta/lowlevel_init.S | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/mips/mach-malta/lowlevel_init.S b/arch/mips/mach-malta/lowlevel_init.S index a0134f8..368c2fe 100644 --- a/arch/mips/mach-malta/lowlevel_init.S +++ b/arch/mips/mach-malta/lowlevel_init.S @@ -62,6 +62,10 @@ LEAF(mach_init_lowlevel) lui t0, 0x5e00 sw t0, 136(t1) /* GT_PCI0M1HD */ + /* make KSEG0 uncached */ + li t0, CONF_CM_UNCACHED + mtc0 t0, CP0_CONFIG + /* return */ b mach_init_lowlevel_return nop -- 1.7.10 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
